v3.26.1
Earnings Per Common Share (EPS) (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Numerator for EPS:        
Net income $ 948 $ 1,144 $ 1,711 $ 1,842
Less: Net income attributable to noncontrolling interests 0 0 0 0
Net income attributable to AIG common shareholders 948 1,144 1,711 1,842
Net income attributable to AIG common shareholders $ 948 $ 1,144 $ 1,711 $ 1,842
Denominator for EPS:        
Weighted average common shares outstanding - basic (in shares) 529,539,714 572,817,409 533,775,623 583,272,826
Dilutive common shares (in shares) 4,034,824 5,123,823 4,070,909 5,262,102
Weighted average common shares outstanding - diluted (in shares) 533,574,538 577,941,232 537,846,532 588,534,928
Net income per common share attributable to AIG common shareholders:        
Basic (in dollars per share) $ 1.79 $ 2.00 $ 3.21 $ 3.16
Diluted (in dollars per share) $ 1.78 $ 1.98 $ 3.18 $ 3.13
Number of shares excluded from diluted shares outstanding because the effect would have been anti-dilutive (in shares) 1,177,254 118,717 915,465 140,236